Citazione Stile APA (7a Edizione)

Baird, S. W. (1900). Graded work in arithmetic. Second book, numbers to 100. American Book Co.

Citazione stile Chigago Style (17a edizione)

Baird, S. W. Graded Work in Arithmetic. Second Book, Numbers to 100. Nuew York-Cincinnati- Chicago: American Book Co, 1900.

Citatione MLA (9a ed.)

Baird, S. W. Graded Work in Arithmetic. Second Book, Numbers to 100. American Book Co, 1900.